Road-making machine



March 30 1926.

H. A. HOXIE ROAD MAKING MACHINE Filed Sept. 6 1923 4 Sheets-Sheet l March 30 ,'1926.

H. A. HOXIE ROAD MAKING MACHINE Filed Sept. 6,

1923 4 Sheets-Shee'fl 2 www www March 30 1926.

H. A. HOXIE ROAD MAKING MACHINE Filed Sept. 6 1923 4 Sheets-Sheet 5 .www

March 30 1926.

H. A. HoxlE ROAD MAKING MACHINE 1923 4 Sheets-Sheet 4 Filed Sept. 6

Patented Mar. 30, 1926.

UNITED STATES HARRY A. HOXIE, F GRANI RAPIDS, MICHIGAN.

ROAD-MAKING MACHINE.

Application led September' 6, 1923. Serial No. 661,187.

To all whom t may concern:

Be it known that I, HARRY A. Hoxm, a citizen of the United States, residing at Grand Rapids, in the county of Kent and i State of Michigan, have invented new and useful Improvements in Road-Making Machines, of which the following is a specification.

The present invention relates to road-mak ing machines; and one of its objects is to provide a road-making machine having a plurality of rotatably mounted piek bars; and further, to provlde in such a machine pick bars movable to adjusted positions nearer to or further from each other on the axis of their rotatable mounting, and to adjusted turned positions about said axis; and further, to provide in such a machine, pick bars helically disposed about the axis of such rotation; and further, to provide improved means for mounting such pick bars adj ustably on a rotatable shaft; and further, to provide in a machine of that character pick bars movable in their longitudinal direction to adjusted positions on said shaft; and further, to rovide such a pick bar having an improve inclined cutting edge. The said object is attained by, and the invention finds preferable embodiment in, the structure hereinafter particularly described in the body of thisv specification and illustrated by the aocompanylng drawings, in which Figure 1 is a rear view of my road making machine;

Figure 2 is a left hand side view thereof;

Figure 3 is a vertical sectional view of parts of the same taken on line 3-3 of Fig- `'Figure 4; is a top plan view of sald machine; j

Figure 5 is an end view of the pick bars of the machine' arranged in the same plane;

Figure 6 is a side view .of one of the machines carrying wheels, its mounting, and track on which it travels;

Figure 7 is a top plan view of said wheel, and of its mounting, partly sectioned;

Figure 8 is a side view of said wheel; Figure 9 is a fragmentary vlew (enlarged) of a portion of the same, shown partly in section;

Figure 10 is a side view of a portion of a rotatable shaft showing pick bars carried thereby; v

Figure 11 is a sectional view of the same 55 taken on line 11-11 of Figure 10;

Figure 12 is a sectional view. (enlarged) of certain parts taken on line 12--12 of Figure 1 1;

Figure 13 is a front View of the operative 60 end portion of a pick bar;

Figure 14 is a side view of the same; and

Figure 15 is an end view thereof.

Figure 16 is a top plan view of parts of a road-making machine having the members and mechanisms shown in preceding views, and in addition a scraper blade following the pick bars; and

Figure 17 is a transverse sectional view of the same taken on line 17-17 of Figure 70 16. l

My road-makin@r machine has a frame, designated general y 1, on which is rotatably mounted horizontally disposed shaft 2 carrying a plurality of pick bars 3 extending 75 transversely thereof. These pick bars are severally-or in the construction shown batteries of three thereof are severally-movable on the shaft to desired adjusted and clamped positions thereon.

These pick bars may be thus movable toward or away from each other on the shaft, or to different turned positions thereon. They may be adjusted in a series helically disposed about the shafts axis, so as to move the loosened earth to the right hand side or t'o the left hand side of the machine; or toward both sides thereof, or to the middle thereof, by arranging the helical winding of the pick bars adjacent one side of 99 lthe machine oppositely to the helical winding of the .pick bars adjacent the machines opposite side.

The pick bars may also be severally moved longitudinally to desired adjusted and clamped positions, so as to out the earth beneath the machine more deeply in places in the machines transverse direction than in seen in dotted lines at 4 in Figure 1 or a surface hollowed 1n cross section as shown 5 in dotted lines at 5 in said view.

The path of the operative ends of the pick bars in their rotation about the axis of the shaft 2 is indicated in dotted lines 6 in some of the views.

- In order that the pick bars may be thus moved and clamped 1n adjusted position on the shaft 2, I provide a carrying member 7 having a flat face 8 and an oppositely disposed recess 9 in which the shaft 2 is received and fits, and a yoke 10 in whose bight 11 this shaft is received and fits, as particularly seen in Figures 10, 11 and 12. vThe parallelly -disposed arms 12 of this yoke pass through openings in the plates 13, and their threaded outer ends have nuts 14 which are screwed down on the arms to clamp the pick bars between the face of the member 7 and the plates 13. It will be seen that these meansthe carrying member, yokes, plates and nutsserve to clamp the pick bars in all the positions to which they may be moved as above set forth.

The pick bars have at their operative ends cutting chisel edges 15 which are inclined, in the construction illustrated, not only relatively to planes in which the axis of the shaft 2 lies (as seen in Figure 15), but also relatively to this shafts axis (as shown in Figures 13 and 14).

In Figure 5 this inclination relatively to the plane in which the axis of the shaft 2 lies, serves to move the loosened earth oppositely on the opposite sides of the middle of the machine in its traveling direction.

It will be seen that any one of the four" sides of each pick bar may be placed against the face 8 of the member 7, so that the inclined cutting edge 15 may be disposed in any of four ositions.

In preparing the ground for a road of concrete and the like, forms16 are laid at the opposite sides of the proposed pavement. These forms serve as a track on which the machine travels in its operation. In order to adapt the machine to the making of such pavements of different widths-i. e., where `the forms 16 are different distances apart- I provide flanged carrying wheels 17, one or both of which on the same axle 18 are in splined relation thereto, the axle rotating in brackets 19 adjustably held as by bolts 2O in desired positions on cross bars 21 -of the frame as seen in Figures 6 and 7. Collars 22 on opposite sides of these brackets hold these wheels in axial position. The axles are provided with keyways 23 in which may be slid the keys 24 seated in keyways 25 in the wheels and clamped by set screws 26, as seen in Figures 7, 8 and 49. ,l

The machine may be-propelled along its track (the forms 16), and the shaft 2 may be rotated in various ways and by various means. In the'construction illustrated in the drawings, such means are the following: The engine indicated at 27 and enclosed in a housing 28 has a crank shaft 29 carrying at one end the sprocket wheel 30 with which it may be coupled by the friction clutch indicated at 31 operated by a handwheel 32. The chain 33 carried by the sprocket wheels 30 and 34 drives thev gears 35on the shaft 42, these gears 35 meshing with gears 37 which mesh with gears 38 on shaft 2, whereby the pick bars are operatively rotated.

The machine is propelled on the forms 16 by the chain 40 carried by the sprocket wheels 41 and 39, the latter` being coupled with the shaft 43 by a clutch indicated at 44 and operated by a lever 45.v Reducing gearing is housed in a housing 46 and drives the shaft 47 whose gear 48 meshes with a gear 49 meshing with the gear 50 on the rear axle In Figures 16 and 17, my road-making machine is provided with a scraper blade, or-as shown-with a pair 60 thereof, behind the pick bars, these blades being swingably mounted at their inner ends at 61 on a cross bar 62 of the frame 1 and clamped at their outer ends as indicated at -63 in a desired angle to the direction of the machines travel. These blades, following the pick bars, in the machines forward movement, serve to scrape away the earth loosened by the pick bars.

The invention being intended to be pointed out in the claims, is not to be limited to or by details of construction of the particular embodiment thereof illustrated by the drawings or hereinbefore shown or `de scribed.

I claim:

1. In a machine of the --character de-v scribed: a vehicle; a horizontally dis osed shaft rotatably mounted thereon; a'pic bar carried bythe shaft extending transversely thereof; a pick bar-carrying member having a face andan oppositely disposed recess in which the shaft isreceived; a yoke having a bight in which the shaft is received and parallelly disposed threaded arms; a plate having openings therethrough receivmg said arms; nuts on the threaded arms for clamping the pick bar inI longitudinal adjustment between said plate and the face of said member, and said member and yoke in longitudinal and turned adjustment on the shaft 2. In` a machine of the character described: a vehicle; a horizontally disposed shaft rotatably mounted thereon; pick-bars carried on the shaft extending transversely thereof; pick bar-carrying,r members, each having a face and an oppositely disposed recess in which the shaft is received; 'yokes, each having a bight in which the shaft iS received and parallelly disposed threaded arms; a plate having openings therethrough receiving the arms of the vokes; nuts on the threaded arms for clamping the pick bars parallelly with each other and in longitudinal adjustment between said plate and the 10 faces of said members, and said members and yokes in longitudinal and turned adjustment on the shaft.

In testimony whereof I hm'e hereunto set my hand at Grand Rapids, Michigan, this 15 1st day of September, 1923.

HARRY A. HOXIE. 

